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Nano-material anti-reflection film with low refractive index

A technology of anti-reflection film and nano-materials, which is applied in the field of reflective film, can solve the problems of reduced reflectance and lack of anti-reflective film, and achieve the effect of small weighted average reflectance

Inactive Publication Date: 2009-05-13
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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Problems solved by technology

[0004] The present invention aims at the problem of lack of anti-reflection film design in existing space silicon solar cells, and proposes a nano-anti-reflection film, a structure of an anti-reflection film system of low refractive index nanomaterials, which uses low refractive index nanomaterials , so that the reflectivity can be reduced, and the anti-reflection effect is obvious, thus better solving the problem of anti-reflection in the use process of space silicon solar cells

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Embodiment Construction

[0014] The single-layer anti-reflection film uses the interference principle of phase difference in the reflected light on both sides of the anti-reflection film to achieve the anti-reflection effect, and the reflectivity can be obtained by using the Fresnel formula. For the multi-layer film system, one layer can be selected randomly, and the upper layers of the film are equivalent to an interface, and the lower layers of the film are also equivalent to an interface, then the whole system is equivalent to a single-layer film, or Find the equivalent Fresnel coefficient of the multilayer film system, and then find the reflectivity. In the discussion, it is convenient to introduce the concept of optical admittance (Y) to analyze the reflective properties of multilayer optical films. At this time, for the refractive index n 0 The incident medium and the m layer together with the substrate are equivalent to the interface of a new substrate and apply the Fresnel formula, then the r...

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Abstract

The invention relates to a low refractive index nano-material anti-reflecting film, and low refractive index nano-material is introduced to the design of the anti-reflecting film to obtain good effect; the design result of the low refractive index nano-material anti-reflecting film has the advantages of convenient technology, wide realization and application prospect, and the like; and the low refractive index nano-material anti-reflecting film provides preparation parameters for the preparation of space silicon solar anti-reflecting film, and can be applied to the fields of solar energy industry, communication, building environment protection energy saving, IT industry, auto industry, military affairs, aerospace engineering, and the like.

Description

technical field [0001] The invention relates to a reflection film in the field of solar cells, in particular to a nano anti-reflection film. Background technique [0002] Solar energy is an inexhaustible source of energy for human beings. Although the solar photovoltaic industry is growing at an annual rate of about 33%, the energy of the sun is difficult to be fully utilized due to the high cost of solar cells. At present, the challenge of converting sunlight into electricity through photovoltaic solar cells is: to greatly reduce the cost of delivering solar power per watt, and if it is to compete with fossil fuels and nuclear power generation, it will be reduced by 5-10 times; Competition will be reduced by 25-50 times. A solar cell is an optoelectronic device that converts light energy into electrical energy. The improvement of its efficiency has been a problem that people have been working on for a long time, and an important factor that affects the efficiency of the c...

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Application Information

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IPC IPC(8): H01L31/0232H01L31/052H01L31/0216
CPCY02E10/52Y02B10/10Y02E10/50
Inventor 刘永生杨文华
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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